GCD of 21, 95, 94, 77 Calculator

Given Input numbers are 21, 95, 94, 77

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 21

List of positive integer divisors of 21 that divides 21 without a remainder.

1, 3, 7, 21

Divisors of 95

List of positive integer divisors of 95 that divides 95 without a remainder.

1, 5, 19, 95

Divisors of 94

List of positive integer divisors of 94 that divides 94 without a remainder.

1, 2, 47, 94

Divisors of 77

List of positive integer divisors of 77 that divides 77 without a remainder.

1, 7, 11, 77

Greatest Common Divisior

We found the divisors of 21, 95, 94, 77 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 21, 95, 94, 77 is 1.

Therefore, GCD of numbers 21, 95, 94, 77 is 1

Given Input Data is 21, 95, 94, 77

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 21 is 3 x 7

Prime Factorization of 95 is 5 x 19

Prime Factorization of 94 is 2 x 47

Prime Factorization of 77 is 7 x 11

The above numbers do not have any common prime factor. So GCD is 1

Step1:

Let's calculate the GCD of first two numbers

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(21, 95) = 1995

GCD(21, 95) = ( 21 x 95 ) / 1995

GCD(21, 95) = 1995 / 1995

GCD(21, 95) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 94

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(1, 94) = 94

GCD(1, 94) = ( 1 x 94 ) / 94

GCD(1, 94) = 94 / 94

GCD(1, 94) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 77

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(1, 77) = 77

GCD(1, 77) = ( 1 x 77 ) / 77

GCD(1, 77) = 77 / 77

GCD(1, 77) = 1

GCD of 21, 95, 94, 77 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 76, 43, 45, 36
• GCD of 93, 69, 80, 57
• GCD of 47, 93, 71, 95
• GCD of 80, 66, 37, 90
• GCD of 77, 41, 97, 40

1. What is the GCD of 21, 95, 94, 77?

GCD of 21, 95, 94, 77 is 1

2. Where do I get the detailed procedure to find GCD of 21, 95, 94, 77?

You can find a detailed procedure to find GCD of 21, 95, 94, 77 on our page.

3. How to find GCD of 21, 95, 94, 77 on a calculator?

You can find the GCD of 21, 95, 94, 77 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.